package com.atguigu.gulimall.order.service.impl;

import com.atguigu.gulimall.order.entity.OrderEntity;
import com.atguigu.gulimall.order.entity.OrderReturnReasonEntity;
import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.order.dao.OrderItemDao;
import com.atguigu.gulimall.order.entity.OrderItemEntity;
import com.atguigu.gulimall.order.service.OrderItemService;

@RabbitListener(queues = {"hello-java-queue"})
@Service("orderItemService")
public class OrderItemServiceImpl extends ServiceImpl<OrderItemDao, OrderItemEntity> implements OrderItemService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<OrderItemEntity> page = this.page(
                new Query<OrderItemEntity>().getPage(params),
                new QueryWrapper<OrderItemEntity>()
        );

        return new PageUtils(page);
    }
    /**
     * queues: 声明需要监听的所有队列
     * org.springframework.amqp.core.Message
     * 参数可以写以下类型
     * 1、Message message 原生消息详细信息, 头 + 体
     * 2、T<发送的消息类型>  OrderReturnReasonEntity content
     * 3、Channel channel ；当前传输数据的通道
     *
     * Queue；可以很多人都来监听,只要收到消息,队列删除消息,而且只能有一个收到消息
     * 场景 ：
     *      1)、订单服务启动多个:同一个消息,只能有一个客户端收到
     *      2)、只能一个消息完全处理完,方法运行结束,我们就可以接收到下一个消息
     */
//    @RabbitListener(queues = {"hello-java-queue"})
    @RabbitHandler
    public void recieveMessage(Message message, OrderReturnReasonEntity content, Channel channel){
//        System.out.println("接收到的信息...内容: "+message+"内容"+content);
        byte[] body = message.getBody();
        //消息头的属性信息
        MessageProperties properties = message.getMessageProperties();
        System.out.println("消息处理完成=>"+content.getName());
        //channel内按照顺序自增的
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        System.out.println("deliveryTag=>>"+deliveryTag);
        //签收货物,非批量模式
        try{
            if(deliveryTag %2 == 0){
                //收货
                channel.basicAck(deliveryTag,false);
                System.out.println("签收了货物..."+deliveryTag);
            }else{
                //退货
                //long deliveryTag,boolean multiple,boolean requeue（重新入队）
                channel.basicNack(deliveryTag,false,false);
//                channel.basicReject();
                System.out.println("没有签收"+deliveryTag);
            }
        }catch (Exception e){
            //宕机.网络中段
        }
    }
    @RabbitHandler
    public void recieveMessage2(Message message, OrderEntity content, Channel channel){
//        System.out.println("接收到的信息...内容: "+message+"内容"+content);
        byte[] body = message.getBody();
        //消息头的属性信息
        MessageProperties properties = message.getMessageProperties();
        System.out.println("接收到消息"+content);
    }
}